function [feature] = specturm_time(file_path,filename)
    current_path = pwd;
    cd(file_path);
    data = load(filename, '-ascii');
    cd(current_path);
    
    data_mean = mean(data);
    data_variance = var(data);
    data_rms = rms(data);
    feature = [data_mean, data_variance data_rms];
end